Abstract
In cold spray method, a coating is formed by exposing a substrate to high velocity solid-phase particles, which have been accelerated by supersonic gas flow at a temperature much lower than the melting or softening temperature of the feedstock. In this study, experiments investigated the influence of the substrate conditions, such as temperature, roughness, thickness and materials of substrate, on properties of copper and titanium coatings sprayed by cold spray. With increasing preheated substrate temperature, titanium deposition efficiency increse but copper deposition efficiency decrese. So, the result is different by the material. With increse gun traverse speed, deposition efficiency of titanium and copper decrese rapidly.
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